Wiring; Circuit Breakers And Disconnect Switch - Xantrex GT2.5-NA Owner's Manual

Wiring

Recommended wire
stripping length
Acceptable wire
sizes

Circuit Breakers and Disconnect Switch

AC Circuit Breaker Requirements
DC/AC Disconnect Switch
Ground Fault Fuse
975-0245-01-01
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Wire size and length will be determined by the location of each component and
their relative distance to each other. Wire sizes may also be affected by whether or
not conduit is used.
Strip all wires 9 mm (3/8 inch).
The AC and DC terminal blocks in the GT Inverter accept wire sizes from
#14 AWG to #6 AWG.
Important:
Wiring should not be undersized. Undersized wiring can result in
significant power losses and reduction in system efficiency.
The following circuit breakers, disconnect switch and fuse are required for
installing this equipment.
In North America, the main utility service panel must dedicate a double pole
breaker to operate each GT Inverter installed. This breaker must be sized to handle
the rated maximum output voltage and current of the GT Inverter (see "Electrical
Specifications", "Output" on page A–2).
The wiring box includes a PV/Utility disconnect switch that switches both AC and
DC at the same time.
WARNING: Shock hazard
Do not remove the wiring/disconnect box. The 600 volt DC/AC disconnect in the wiring
box meets NEC Article 690. It is a non-serviceable component and shall remain in place.
Removal can expose energized conductors.
Use caution when working around sources of DC power. Although the DC/AC disconnect
switch disconnects the inverter from DC power, hazardous voltages from paralleled PV
strings may still be present upstream of the switch.
The GT Inverter is equipped with a 600 volt 1-Amp ground fault protection fuse
(replace with Littelfuse KLKD 1 or equivalent).
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Preparing for the Installation
2–13